{
  "units": "mm",
  "width": 60,
  "depth": 40,
  "thickness": 3,
  "bolt_pitch_x": 40,
  "bolt_pitch_y": 24,
  "square_clearance": 4,
  "strap_pitch": 50,
  "strap_width": 3,
  "strap_length": 12
}